Altitude and soil properties affected grassland and weed distribution – JBES

Soil factorsElham Abbasvand, Sirous Hassannejad, Jalil Shafagh-Kolvanagh, Saied Zehtab Salmasi

Department of Plant Eco-Physiology, University of Tabriz, Iran

Key words: Altitude, CCA analysis, Soil factors, Weed.

Abstract

Altitude and soil properties can influence vegetation community and their density in rangelands. Knowing the relationships between plant species distribution with environmental factors would allow choosing the best strategy for the moderate of plants. The aim of this study was to investigate the correlation between plant species density with altitude and soil parameters in Khalatposhan rangeland in Tabriz-Iran. For this reason, grids of 20 m x 40 m were established in this rangeland, and soil samples were collected at the intersection points for physical and chemical analysis, also altitude for this points was measured by GPS. Soil factors,The canonical correspondence analysis (CCA) used for assesses the effects of some soil factors and altitude on grassland species and weeds distribution. Results showed that altitude as an environmental factor and pH, electrical conductivity, phosphorus and potassium as soil factors had the most effect on grassland plants and weeds distributions. Lepidium vesicarium L. had the most correlation with altitude. In contrast, increasing of altitude was caused that the density of some species likes Alyssum dasycarpum stapf and Rochelia macrocalyx Bge. reduced. Increasing of nitrogen and organic material led to increasing of some plants density likes Allium ampeloprasum L., Astragalus (Tragacantha) parrowianus, Chenopodium album L. and Salsola kali L. subsp. Tragus (L.) Nyman, but, density of Lolium rigidum Gaudin declined in these conditions. As a result of this study CCA analysis is necessary to find relationships between environmental factors and weed species distribution.

jbes-vol4no6-p231-235Get the original articles in Source: Volume 4, Number 6, June 2014 – JBES

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Published by: International Network for Natural Sciences

Related Post: The study of adaptability and results of medicinal plants cultivation in the conditions of Fars province collection — JBES

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